Lens



FIG. 1 is a perspective view of the new design for a lens;

FIG. 2 is front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in the drawings are included for the purpose of illustrating portions of the article that form no part of the claimed design. The shading lines shown in the drawings represent surface character and/or contour of the design, and are not intended to indicate surface decoration. 

CLAIM The ornamental design for a lens, as shown and described. 